Imagine you live in a neighborhood with deep community or family ties. Someone down the street wins the lottery/makes an 8-figure exit and wants to buy out the block for a mega mansion. Can tax rates be low enough for you to raise your own valuation to "defend" your middle class home against vast wealth? What does that do to local government revenues?
The very rich regularly spend $15m or more on a home. If Jeff Bezos came by my house and decided he liked the view, I would have to start paying $300k in taxes or move (if 2% tax). I get that making $15m for my house would make me rich, but this is our first home as a family and all our memories are here. I shouldn't be forced to choose like that - protection from arbitrarily being forced out of my home is one of the main reasons to own a home in the first place.